Light is dim - Microwave Ovens

Behind the display module there is a capacitor. It needs replacing. They bulge, split and fail.

As some others have suggested elsewhere, I purchased and applied Display Dimming Film available online. I suggest using a single piece that completely covers the opening (will probably require trimming to fit) rather than having two or three smaller pieces abut, otherwise sparkles of light will shine through the spices. Once you have this film, you will likely find other uses for it. For example a digital clock near a TV, or a overly bright power indicator light on desktop computer speaker, or the power indicator on the desktop computer itself that stays on in standby mode through the night.

Lights lowering in the kitchen when turning on microwave ...

diy.stackexchange.com/.../lights-lowering-in-the-kitchen-when-turning-o...

Nov 4, 2012 - Lights lowering in the kitchen when turning on microwave oven: symptom of an ... In the best case, this may be normal if the dimming is minor.

Possible causes of dim Microwave Oven display ' All About Circuits

forum.allaboutcircuits.com > ... > Electronics > General Electronics Chat

Jun 13, 2013 - I've seen some Microwave ovens that will not display a backlight anymore. They still work, but the display is so dim, you have to be inches away to. ...Monitoring the output of a light-dependent resistor, or photoresistor, allows ...

What Is Causing My House Lights To Dim?

blog.1000bulbs.com/what-is-causing-my-house-lights-to-dim/

Change it

Good Morning Paul, thank you for allowing me to assist you!

For the above-listed Frigidaire model number, FMV156D, it is not recommended to use a bulb larger than 30 watts. Your microwave does not have an option available to adjust the lights. If the light is dimmed, than more than likely your microwave is experiencing an issue with the control board, a potential wiring failure, or faulty light socket. Regrettably, this is not a simple DIY job. I would strongly recommend connecting with a professional to narrow down the precise issue before investing in parts that may or may not be the root cause. You can often locate a qualified service provider through the manufacturer website.

either the display is bad or the unit may have a setting in the menu for adjusting the brightness level

The problem is in the keypad control board, in order to address this, the assembly will need to be replaced, but since this is a dimming situation I would leave well enough alone when you consider price as the factor.

Toss it out. The transformer is likely bad.

Sounds like your microwave's outlet is on the same circuit with the lights.

High-current devices like microwave ovens should be on their own breaker if possible.

If the dimming is very slight, it may be okay.

If it's considerable, it may be a good idea to run a separate line to the microwave's outlet - especially if it starts blowing your breaker!

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

We can replace the VFD tube for you. The total cost for this repair is $71.06. For more information, our site is linked at our listing here on FixYa: http://tinyurl.com/yzjozk